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Questions tagged [email-bounces]

email bounces are messages that are delivered to the nominated postmaster account on an email server to indicate a problem delivering the mail to one or more recipients.

email bounces are messages that are delivered to the nominated postmaster account on an email server to indicate a problem delivering the mail to one or more recipients.

Bounces can result from unknown users, failed mail servers, or other network or configuration issues.

402 questions
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Postfix: Bounce incoming email, but still deliver

I run my own mailserver but I am getting "spammed" by a certain individual. In order to try to discourage this person from sending me any more emails, I would like to bounce the incoming email (based on his email address). But I still want the email…
Zippy1970
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Is a soft SPF fail bad?

Received-SPF: softfail (google.com: domain of transitioning user@domain.com does not designate XXX.XX.XXX.XXX as permitted sender) client-ip=XXX.XX.XXX.XXX; Authentication-Results: mx.google.com; spf=softfail (google.com: domain of transitioning…
Daniel
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When sending emails through smtp do I need to setup DomainKeys and any kind of other email config?

When sending emails through gmails smtp (smtp.gmail.com) do I need to setup DomainKeys and any other kind of email config?
Daniel
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Gmail is blocking email from my IP

I've had a virtual private server for close to 6 months, and I'm going to start sending emails to users from noreply@mydomain.com. My handful of email tests so far have all resulted in a bounce because of "an unsual rate of unsolicited mail…
JellicleCat
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Postfix: How to check if my email headers are RFC5321/RFC5322 compliant?

We are running a Postfix MTA (version: 3.4.14, OS: Debian 10) and since a short time emails sent to a certain provider (Web.de/GMX) are not being accepted anymore (the emails are sent by an ancient Perl program, which has always worked reliably so…
manifestor
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Postfix bounces incoming emails with uppercase recipient (unknown user)

I just installed Postfix on Debian minimum server and configured it as below: installation: installed it chose internet site set name to mydomainname.com /etc/postfix/main.cf configs: changed myhostname to mydomainname.com changed alias_maps to…
Shahab Ouraie
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Email delivery issues with Hotmail/Outlook

I am using SendGrid to send emails and I have properly configured my domain (SPF, etc.). Usually everything works, except that Hotmail/Outlook often rejects the emails I send: reason": "550 5.7.1 Unfortunately, messages from [x.89.100.x] weren't…
Basj
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Delivery Status Notifications not being retried

I was checking my ISP's Out of Office reply system and I found that although they sent a message to my server, because my server replied with a 4xx error code, the server did not attempt to re-deliver the message. I did a further check on one of…
Ravenstar68
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Will enabling non-delivery notifications cause more spam?

In the past we received a lot of spam email. The past year it was a lot less and we would like to keep it that way offcourse. We are a construction company and we receive a lot of construction drawings which are big in filesize. The maximum…
Ramon Bakker
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Setting Postfix for outbound email via SMTP with local root delivery for cron reports

I recently had to diagnose a couple of servers running Postfix which emailed results of rsync cronjobs when they returned a non-OK value. While Postfix was emailing the recipients on rsync failure, I noticed that the cronjob STDOUT was not being…
Chris Woods
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What is wrong with this e-mail which is failing SPF(mailfrom) and DMARC?

This is a follow-up from "Why is my opendmarc failing pretty much everything that comes through?". I'm really struggling to understand what is going on. Outgoing mail is verified correctly by the receiving end (e.g., Gmail). Some incoming mail seems…
Morpheu5
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Mobile devices unable to send mail due to servers sending quota being exceeded

I have a customer who has their own exchange. Their mobile devices are struggling to send emails with attachments and keep reporting that "your email server's sending quota has been exceeded". I've checked the transport limits, the send and receive…
John
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Postfix: redirecting an email to local user (User unknown in virtual alias table)

My question is similar to others, but their answers were unhelpful. What I want to do: Send email from xyz@domain.com and route incoming mail to xyz@domain.com to multiple external (e.g. x@gmail.com) addresses. As an intermediate step, I want to…
nnnmmm
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Postfix error with remote mailserver - Error 550

i am new to mailservers and i think i totaly destroyed the config and i have no clue how to fix this mess. For my understanding things are "OK" but i think i'm missing something important. I replaced IPs with SERVER1 and SERVER2 and the domain with…
Maaaark
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Postfix email throttling for deferred queue

I have an issue with email sending speeds on postfix. the email to yahoo are getting throttled and getting suspended temporarily. I edited the main.cf configuration to slower down the speeds and add a delay. This works fine with email sending at…
user432070
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